a driver drives 10 km in 40 minutes, what the average speed

Question

 i need help with my hoework bc it is hard

Answer 1

I'm assuming that you're looking for kilometers per hour?

So we're looking at ^{10 km}/_{40 min}

Let's simplify the problem by factoring out 10:

^{1 km}/_{4 min}

There're 60 minutes in an hour:

^{1 km}/_{4 min} * ^{60 min}/_hr

^{1 km * 15} / _hr = 15 ^km/_hr